Peter Collingbourne 5f220beefc DI: Reverse direction of subprogram -> function edge. ... Previously, subprograms contained a metadata reference to the function they described. Because most clients need to get or set a subprogram for a given function rather than the other way around, this created unneeded inefficiency. For example, many passes needed to call the function llvm::makeSubprogramMap() to build a mapping from functions to subprograms, and the IR linker needed to fix up function references in a way that caused quadratic complexity in the IR linking phase of LTO. This change reverses the direction of the edge by storing the subprogram as function-level metadata and removing DISubprogram's function field. Since this is an IR change, a bitcode upgrade has been provided. Fixes PR23367. An upgrade script for textual IR for out-of-tree clients is attached to the PR. Differential Revision: http://reviews.llvm.org/D14265 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@252219 91177308-0d34-0410-b5e6-96231b3b80d8		2015-11-05 22:03:56 +00:00
..
ArgumentPromotion.cpp	DI: Reverse direction of subprogram -> function edge.	2015-11-05 22:03:56 +00:00
BarrierNoopPass.cpp
CMakeLists.txt
ConstantMerge.cpp
DeadArgumentElimination.cpp	DI: Reverse direction of subprogram -> function edge.	2015-11-05 22:03:56 +00:00
ElimAvailExtern.cpp	Restore "Support for ThinLTO function importing and symbol linking."	2015-11-03 00:14:15 +00:00
ExtractGV.cpp
FunctionAttrs.cpp	[FunctionAttrs] Remove a loop, NFC refactor	2015-11-05 03:04:40 +00:00
GlobalDCE.cpp
GlobalOpt.cpp
InlineAlways.cpp
Inliner.cpp
InlineSimple.cpp
Internalize.cpp
IPConstantPropagation.cpp
IPO.cpp
LLVMBuild.txt
LoopExtractor.cpp
LowerBitSets.cpp
Makefile
MergeFunctions.cpp
PartialInlining.cpp
PassManagerBuilder.cpp	LLE 6/6: Add LoopLoadElimination pass	2015-11-03 23:50:08 +00:00
PruneEH.cpp
SampleProfile.cpp
StripDeadPrototypes.cpp
StripSymbols.cpp	DI: Reverse direction of subprogram -> function edge.	2015-11-05 22:03:56 +00:00